Life-saving apparatus for elevators and cages



Dec. 26, 1922.

FILED MAE. 21,1921.

Wwlrrvrnnn,

S. ANDUAGA, Jn., E ALI LIFE SAVING APPARATUS FOR ELEVATGRS AND CAGES.

miran siaies Ni@ Mittal y srraoiinnnnaea, m., arri) Juan iiusveiio, orManico, Manico. i

Lira-semina seminaires ron nrnvafrens annuler-ius. i

:amenazaron amiral-@i1 21,1921. .semi Nojiaeofi. u

To @ZZ '1U/0m it may coiiceimg i i Be it Anioivn that ive, SIMON NDUAGA,J r., mining` engineer, `and dinanw LUEVANO, me clianic, citizens otMexico, residing'atithe city ol Mexico, Federal District,l Republic oitMexico, haveVinvented certain neivand useful Improvements in Lite-SavingApparatiis ,tor Elevators and Cageaofivhich the 'following is aspeciiication. y. i

This invention rrelates to safety suspendi in?,` rgear` 'for `elevatorsandthe likel particib larly though not exclusively lfor use in mines andother places Where a quick acting and suresupportinpi means ylor theelevators or cage is essential to the safety of the passengers inpreventing the falling of the elevator in the event ot breakage ot' Vtheusual suspension cable, or otherfaccident.

- Safety gear .i'or' the purpose aforesaid vhas been devised hithertoconsistingvota; drawbar, block, yor similar member movable rela: tivelyto the elevator or cage and to'iv'hich the hoistingtackleis attached andarms lor bars located inl proximity to the elevator` guide posts andconnected either directly to the draivbar or bloclnor to a link or memberattached'thereto. ln the/event ofthe breakage in the hoisting tackle,the draivbar or block and theniembe'r attached thereto,

when such is provided, falls, Whereuponxthe ends ot the arms orbarsarecaused "to penetrate into the -guiderposts or: engage With cases acompression spring is used and coiled around the difaivbar or aplurality ol such are suitably arrangedin connection with the aforesaidarms. ln other constructions a tension spring is used attached at oneend to the draivbar or block, and at the other to a iied part et theelevator or cage` rlhe object oit the present `invention is toy improvesafety suspending gear of the type aforesaid to render such gear moreeilicient and sure, a further object being to provide means to protectthe mechanism from dust, mud, pebbles, splinters of timber, and thelilre all of which are, frequently the cause of the mechanism notoperating' eiiiciently or at all at the crucial moment.` y

i'iccoriiling to the present invention vthe the elevator *guide posts`tinted by thearinsor sprags,

f and l1 safetyy suspension gear comprises a cross bar o r equivalentdevice freely* movable lon guide rods and attached to a rod connected`ivithkk the usual hoisting` tackle, being Anormally held raisedthereby, the said guide rods having ineensv to limity theup'vvard'movement `oli` the bari, arms or spra-gs pivotally mounted inthe saidbai',` anda series otspringszcom* bincd with the bar in such a.manner'lthat one otthem -is normally held in compression `While theothers are normally, held in tension, so that in the eventpof, abreakage in the hoisting tackle'the "crossbar falls instan.-

taneously under the influencey of the springs and itsoivn WeightVWhereupc'in the "aforesaid arms or Asprags n are 1 forcibly projectedinto -itleans Lare valso provided to preven'tthe Wooden guide posts forthe` elevator from ,splittingy when pene'- i ln the accompanyingdrawing,'lligtfl rep- J resents a y longitudinal cross-section i of Y themechanism, attachedto a cage or elevator;

apparatus .on line l-v-l of Figzl.

lilith reference; vto the drawing, A `is `a 2 isy ase'ction'alplan vieivoi? the housing, strongly connected to thetop oi g `the cage B byboltsor Vrivets C with` the stopping Amech auisni` mounted therein, 1 inde#pendent of the elevator or cage; To the body vD oi; this mechanism `isconnected-th'e'stem E to which they elevator or, cageis suspended by theeye or hoolrli1 Jfor the cable. The

body Dis guided on rods (l which are tastened solidly to the.housing-and have widening atl G to restrain the body D trom going eov upmore than is convenient, when the elevay tor is in movement vit wouldnot be con venient tliatthe body D sl'iould go `too tar up, because thearms or spi-aga l which are located at each end o1 the body Would get`out of their place and thus give yno efficiency.

rlheY stem E `forms `seat 'forthe spring li which compresses when thecage or elevator is suspended, until the body D rests at the points Grof the rods G, this position oi course is adjusted beforehand so that`the arms I in a critical moment `are forced by springs L and the Weightof "the body l) to y enter the Wooden-guides M tor the elevator.V

ln other Words, the object of the springs K and L is to accelerateorenforce thedescent of the body llas the ,descent ot this part must beinstantaneous and with siitiicient torce so that the arms l getinte theWoodenv' lguides My before the live force genera-ted by vits stem E aresuiiicient/fto saving` apparatus Work.-

the fallv of the cage surpassesthe resistance rof the armsI or theWoodin'vvhich they are going to rest. a

I-IoWeverg' if the strength ofthe springs k mud, -pebblesyetc;l which:always are found in mine shafts,` l can enter. f1 The arms I are onlypermitted to enter thevvooden luides t 'throughs holefinl the U-'iron N,this U-iron being'iointed tothe 'ho'usingin such arvayto preventintroduction :of strange` objects into itsspr-ingsor articulations,'andlto `vprotect the'Wooden-guides fromsplitting when the v i i held raisedthereby, the said'guide rods having meansto limitthe upwardV movement ofarms. I grasp intofthem.

ThejWorking `ofthe apparatus Will 'be readily (understood by-the`following` explanation: If the elevator orcage issus-v pended thespringsL will be'y in tension and .the spring. K incompression, vso that incase a `descenttakes place by `breaking` 'of the` loable or of thegyves" or hooks, the springsV take theiry normal position', and forcethe v arms I into the Wooden-guides in the shaft,`

Y kis, ther stronger 'will it'inclinelthe .arms tov and thus stoDine-the caffe or elevator rel ,D .t i a P y t Vventing by this Way thefall ofthe cage or elevator. The heavierthe Weight ofthe cagesustainingfthe cageincreases thereby] i As' the arms IareWorkingindependentofv e'ach'otherin the Varranpjernent We havedesigned,: itwill be seen that even when one ofthese is rendered-uselessthe apparatus y can Work with .only one fluke as has been proved byseveralv tests made. I

In testimony whereof iveaflix We knowthat there have been grantedlseveralpatents `for life savers of different kinds for the purposeindicated, but our mechanism shows'essential differences from thehitherto known, and WeWish it to lbe understood that various changes canbe `made in the details ofthe construction of the apparatus, forinstance by employing. `four rodsGuas-'shovvn by dotted lines in Fig.`2, and We'do not Wish to be limited to lthe precise construction shown,as varia tions maybe made Without departing' from the spirit and scopeof our inventions I {HavingI thusy described our invention, whatWefclaiin as new. and desire to secure by'Letters Patent'is as follows yLife savino a) )aratus for elevators com;

prismgacrossbar freely movable on `guiderods and attached toa rodconnected With the 7 usual-hoisting tackl'e *being normally the bar,arms pivotally mounted in the said bar, anda series `of sprlngscombinedvWith thebar insuch a manner that onerof'them is normally'held incompression lWhile the others are normally j-held in tension, so that inthe'event of a breakage inthe hoisting `tacklethe kcross-bar fallsinstantaneo usly unp der theinfluenceof the springs and its ownA`Weight' whereupon the vaforesaid arms are forcibly projected'intotheelevator guide postsfand. means to prevent the'guide posts fromspread-ing transversely when the arms t penetrate into them.` f

tures.

I JUANYLUEVANO.. -v Witnesses: i "VICENTE A. ORTIZ, f i c IVIIGU'ELSELkoWiTzpIr.

our' signa#` f fsrMoN ANDUAGA (JUNIQR). 'l

